Answer: The correct answer is: " 40 mg ".
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There are 40 mg ["40 milligrams" of fluoxetine in 10 mL of the solution given.
Step-by-step explanation:
10 mL * (20 mg/ 5 mL) = __?__mg??
Solve for "?" ; our answer:
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Given: the concentration: "20 mg/ 5 mL" ;
we can reduce this "fraction" ratio ; as a "unit rate" ;
that is: "milligrams per single unit of mL" ;
by dividing each side of the ratio/fraction by "5":
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20 mg / 5 mL = (20 ÷ 5) mg / (5 ÷ 5) mL
= 4 mg / mL ;
Now, with this "newly written" form of concentration:
We are asked: How many milligrams (mg) in 10 mL ?
→ 10 mL (4 mg / 1 mL) ;
→ The units of "mL" cancel out to "1" ; [since: "mL ÷ mL = 1 "] ;
And we have:
10 * 4 mg ;
= (10 * 4) mg ;
= 40 mg .
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The answer is: " 40 mg " .
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Hope this is helpful to you. Best wishes!
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